638637075

素因数分解:

$3^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{22003}}^1$

素因数の和:22065

約数の個数: 48

約数和(自身を含む): 1200538240

約数和(自身を除く): 561901165

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 129, 135, 215, 225, 387, 645, 675, 1075, 1161, 1935, 3225, 5805, 9675, 22003, 29025, 66009, 110015, 198027, 330045, 550075, 594081, 946129, 990135, 1650225, 2838387, 2970405, 4730645, 4950675, 8515161, 14191935, 14852025, 23653225, 25545483, 42575805, 70959675, 127727415, 212879025, 638637075]

約数ペア:

[(1, 638637075), (3, 212879025), (5, 127727415), (9, 70959675), (15, 42575805), (25, 25545483), (27, 23653225), (43, 14852025), (45, 14191935), (75, 8515161), (129, 4950675), (135, 4730645), (215, 2970405), (225, 2838387), (387, 1650225), (645, 990135), (675, 946129), (1075, 594081), (1161, 550075), (1935, 330045), (3225, 198027), (5805, 110015), (9675, 66009), (22003, 29025)]